Jefferson CountyPower Outage History
2014–2025 · Oklahoma
Bottom 20% least reliable nationally — frequent and/or long outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 1, 2017 | 30 hrs | 2,955 (76%) | Unnamed event |
| Nov 3, 2024 | 16 hrs | 2,260 (58%) | Drought |
| Apr 29, 2025 | 1 hrs | 2,113 (54%) | Unnamed event |
| Nov 22, 2014 | 6 hrs | 1,995 (51%) | Drought |
| May 29, 2015 | 17 hrs | 1,907 (49%) | Drought |
Over the 12 years from 2014 to 2025, Jefferson County recorded 641 distinct power outage events, averaging 2.8 hours per event.
The single worst outage on record in Jefferson County started July 1, 2017, lasting 30 hours and leaving up to 2,955 customers without power (76% of the county) at its peak.
May has historically been the worst month for outages in Jefferson County, with 85 events recorded during that month across the dataset.
Based on this history, Jefferson County earns a Reliability Grade of F, placing it in the 18th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Jefferson County.
| County | Grade | National percentile |
|---|---|---|
| Harmon County | F | 19th |
| Dewey County | F | 18th |
| Logan County | F | 19th |
| Blaine County | F | 17th |
| Kiowa County | F | 17th |
Most reliable counties in Oklahoma
The top 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Texas County | A | 96th |
| Kay County | A | 95th |
| Greer County | A | 89th |
Least reliable counties in Oklahoma
The bottom 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Caddo County | F | 4th |
| Washita County | F | 10th |
| Oklahoma County | F | 15th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Jefferson County?
Between 2014 and 2025, Jefferson County recorded 641 outage events, averaging 2.8 hours each.
What is Jefferson County's reliability grade?
Jefferson County has a Reliability Grade of F, in the 18th national percentile.
What was the worst power outage in Jefferson County?
The worst outage on record started July 1, 2017, lasting 30 hours and affecting up to 2,955 customers.